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8th International Conference on Material engineering and Nanotechnology, ICMEN 2024

作者： Sawalha, Ansam Baqain, Sameeh Khasawneh, Mohammad Ali Sawalha, Amani Khasawneh, Ahmad Ali Department of Civil Engineering American University of Madaba Madaba Jordan Department of Mechanical Engineering American University of Madaba Madaba Jordan Department of Civil Engineering Prince Mohammad Bin Fahd University Al Khobar Saudi Arabia Department of Architecture Engineering Applied Science Private University Amman Jordan Management Engineering and Process Improvement Department/Integrated Systems Engineering Department Ohio State University Wexner Medical Center and Ohio State University 660 Ackerman Road ColumbusOH43202 United States

ISBN: (纸本)9789819636235

The concepts of resilience and sustainability have recently gained significant attention from industrial and academic institutions. The resilience concept in the water and energy sectors indicates the ability to recover from disruptions such as natural disasters, whereas the sustainable concept ensures that current needs are met without compromising future generations. In Jordan, the water and energy sectors face numerous challenges, including scarce natural resources combined with the growth in climate-related disasters, regional instability, conflicts, urbanization, continuing difficulties in water and energy resources, and consumer awareness of sources’ conservation and sustainability. To address these pressing issues, the authors conducted in-depth interviews with 33 experts from government, international organizations, private companies, and donor agencies. These discussions explored the current state of the water and energy sectors, highlighting key challenges, the critical need to integrate resilience and sustainability, and potential future directions. The study’s findings emphasize the importance of coordinated strategic planning, along with specific recommendations such as upgrading water pumps, installing smart meters, and implementing time-based tariffs to promote responsible consumption. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Energy Energy Sector Resilience Sustainable Water Water Sector

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Investigating the Feasibility and Benefits of Integrating Renewable Energy systems into Sustainable Pavement Materials and Structures 8th

Investigating the Feasibility and Benefits of Integrating Re...

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8th International Conference on Material engineering and Nanotechnology, ICMEN 2024

作者： Khasawneh, Mohammad Ali Sawalha, Ansam Khasawneh, Ahmad Ali Rababah, Samer Department of Civil Engineering Prince Mohammad Bin Fahd University Al Khobar Saudi Arabia Department of Civil Engineering American University of Madaba Madaba Jordan Management Engineering and Process Improvement Department/Integrated Systems Engineering Department Ohio State University Wexner Medical Center & Ohio State University 660 Ackerman Road ColumbusOH43202 United States Department of Civil Engineering Joordan University of Science and Technology Irbid Jordan

ISBN: (纸本)9789819636235

Sustainability and green environment concepts have evolved in various fields, including but not limited to industry, energy, transport, and construction. Several applications and technologies are integrated into pavement in order to enhance the sustainability of transport infrastructure. Thus, this paper aims to provide an in-depth review to examine the feasibility and benefits of embedding several renewable energy technologies, such as piezoelectric, photovoltaic, thermoelectric, and kinetic energy harvesting systems, into pavement materials. The paper also addresses the environmental impacts of integrating renewable energy into pavement materials and structures. The findings suggest that despite challenges such as high costs and efficiency optimization needs, the integration of renewable energy into transport infrastructure can significantly contribute to reducing greenhouse gas emissions and promoting sustainable development. Finally, future advancements in renewable energy-integrated pavement systems could transform sustainable infrastructure by enabling roads to generate power. Techniques such as piezoelectric materials, photovoltaic pavements, thermoelectric materials, and geothermal energy harvesting, alongside carbon-neutral materials with carbon capture, offer innovative ways to reduce the carbon footprint of roadways and provide alternative energy sources. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Clean energy

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Single-Loop Variance-Reduced Stochastic Algorithm for Nonconvex-Concave Minimax Optimization

arXiv

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arXiv 2025年

作者： Jiang, Xia Zhu, Linglingzhi Zheng, Taoli So, Anthony Man-Cho Department of Systems Engineering and Engineering Management The Chinese University of Hong Kong Hong Kong

Nonconvex-concave (NC-C) finite-sum minimax problems have broad applications in decentralized optimization and various machine learning tasks. However, the nonsmooth nature of NC-C problems makes it challenging to design effective variance reduction techniques. Existing vanilla stochastic algorithms using uniform samples for gradient estimation often exhibit slow convergence rates and require bounded variance assumptions. In this paper, we develop a novel probabilistic variance reduction updating scheme and propose a single-loop algorithm called the probabilistic variance-reduced smoothed gradient descent-ascent (PVR-SGDA) algorithm. The proposed algorithm achieves an iteration complexity of O(∊−4), surpassing the best-known rates of stochastic algorithms for NC-C minimax problems and matching the performance of the best deterministic algorithms in this context. Finally, we demonstrate the effectiveness of the proposed algorithm through numerical simulations. Copyright © 2025, The Authors. All rights reserved.

关键词： Consensus algorithm

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Computations and Complexities of Tarski’s Fixed Points and Supermodular Games 18th

Computations and Complexities of Tarski’s Fixed Points an...

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18th International Joint Conference on Theoretical Computer Science-Frontier of Algorithmic Wisdom, IJTCS-FAW 2024

作者： Dang, Chuangyin Qi, Qi Ye, Yinyu Department of Systems Engineering City University of Hong Kong Kowloon Tong Hong Kong Gaoling School of Artificial Intelligence Renmin University of China Beijing China Department of Management Science and Engineering Stanford University StanfordCA94305-4026 United States

ISBN: (纸本)9789819777518

We consider two models of computation for Tarski’s order preserving function f related to fixed points in a complete lattice: the oracle function model and the polynomial function model. In both models, we find the first polynomial time algorithm for finding a Tarski’s fixed point. In addition, we provide a matching oracle bound for determining the uniqueness in the oracle function model and prove it is Co-NP hard in the polynomial function model. The existence of the pure Nash equilibrium in supermodular games is proved by Tarski’s fixed point theorem. Exploring the difference between supermodular games and Tarski’s fixed point, we also develop the computational results for finding one pure Nash equilibrium and determining the uniqueness of the equilibrium in supermodular games. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Nash equilibrium

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A decentralized and privacy-preserving framework for electronic health records using blockchain

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Alexandria engineering Journal 2025年 126卷 196-203页

作者： Alahmari, Saad Alshardan, Amal Al-Wesabi, Fahd N. Sorour, Shaymaa Alghushairy, Omar Alsini, Raed Khadidos, Alaa O. Duhayyim, Mesfer Al Department of Computer Science Applied College Northern Border University Arar Saudi Arabia Department of Information Systems College of Computer and Information Sciences Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Computer Science Applied College at Mahayil King Khalid University Saudi Arabia Department of Management Information Systems College of Business Administration King Faisal University Al-Ahsa31982 Saudi Arabia Department of Information Systems and Technology College of Computer Science and Engineering University of Jeddah Jeddah21589 Saudi Arabia Department of Information Systems Faculty of Computing and Information Technology King Abdulaziz University Jeddah Saudi Arabia Department of Computer Science College of Computer Engineering and Sciences Prince Sattam bin Abdulaziz University Al-Kharj16273 Saudi Arabia

As healthcare services have become increasingly digitized, Electronic Health Records (EHRs) have become widely adopted, providing seamless data exchange among providers. Conventional EHRs, however, are extremely vulnerable to cyber threats because patients' sensitive data is centralized and transmitted electronically. The paper proposes a decentralized, privacy-preserving framework for managing EHRs on blockchains in order to address these security and privacy concerns. Using cryptographic techniques, such as homomorphic encryption and zero-knowledge proofs, the proposed system enhances security and ensures data integrity. Additionally, the model facilitates scalable, efficient, and secure access to patient records through the integration of cloud-based storage and blockchain. Using smart contracts, we also ensure compliance with healthcare regulations by regulating access control and authentication. As a result of performance evaluations, the proposed approach is demonstrated to be feasible, and the advantages it offers in terms of security, privacy, and efficiency are highlighted. © 2025 The Authors

关键词： Electronic health record

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Evaluation of Factors that Impede the Use of Construction 4.0 Technologies for Construction Safety management

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Journal of engineering, Project, and Production management 2025年第1期15卷 1-14页

作者： Desai, Vimlesh Prabhu D’souza, Lysette Singh, Anil Bhadauria, Vikram Management Studies Department Agnel Institute of Technology and Design Goa Assagao403507 India V M Salgaocar Institute of International Hospitality Education Manora – Raia Goa Salcete 403720 India Department of Information Systems and Operation Management College of Business University of Texas ArlingtonTX76019 United States Department of Information Systems and Computing Technologies College of Business Engineering and Technology Texas A&M University TexarkanaTX75503 United States

The safety performance of the construction sector remains subpar despite the utilization of both conventional and new methodologies. Consequently, there is a decline in the standard of work, the efficiency of employees, and an escalation in project expenses and duration. In order to enhance safety, it is imperative for the industry to use cutting-edge digital technologies at every stage of the project’s lifespan. The utilization of these technologies is not yet prevalent and, by far, may be a factor in the poor safety record in the construction industry. This study aims to identify and evaluate factors that impede the use of such technology to improve health and safety in construction management. Literature review and interviews with a few experts were able to garner 18 factors, which were evaluated by experienced industry professionals on a 5-point Likert scale using a questionnaire survey. The responses were analyzed using the relative importance index (RII) and factor analysis. The analyses indicated ‘Employees’ resistance and reluctance to change’, ‘high upfront investment’, ‘lack of awareness about digital technologies and their benefits’, ‘limited trained workforce to work on digital technologies’, and ‘poor data communication infrastructure facilities’ as the top five barriers. Factor analyses churned out six groups: ‘Organization readiness’, ‘Industry readiness’, ‘Country readiness’, ‘Technology related’, ‘Data related’, and ‘Investment related’ on the basis of latent characteristics. The findings will aid firms, the government, and academia in directing resources and planning strategies to improve the usage of C4.0 technologies in safety and health management in the construction industry. Copyright © Journal of engineering, Project, and Production management (EPPM-Journal).

关键词： Construction industry

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Organizational Elements that Shape Construction Employees’ Approach and Behavior Towards OSH

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Journal of engineering, Project, and Production management 2025年第1期15卷 1-11页

作者： Desai, Vimlesh Prabhu D’souza, Lysette Singh, Anil Bhadauria, Vikram Management Studies Department Agnel Institute of Technology and Design Goa Assagao403507 India V M Salgaocar Institute of International Hospitality Education Manora – Raia Salcete Goa 403720 India Department of Information systems and Operation Management College of Business University of Texas ArlingtonTX76019 United States Department of Information systems and computing technologies College of Business Engineering & Technology Texas A&M University TexarkanaTX75503 United States

The construction industry has one of the highest known rates of occupational incidents. Construction organizations are increasingly recognizing the significance of occupational safety and health (OSH) problems as a prominent area of concern. Though numerous studies have shown that employees’ behavior and approach towards OSH are impacted by Environmental (such as governmental regulations), Personal and Organizational factors, there is a lack of consensus on the organizational elements. Hence, the primary objective of this study is to ascertain the organizational elements that influence employees’ adherence to OSH and suggest improvement needs, if any. To achieve the objective, the study adopted a qualitative research approach and conducted semi-structured interviews with fifteen highly experienced professionals in the construction industry. Using manual thematic analysis, the interview transcripts were analyzed to identify and extract major themes based on commonalities. Six themes were recognized: Empowerment, communication, knowledge management and learning and development, leadership and top management commitment, internal systems and processes, and work culture and spirituality. The findings of this study will assist the industry in developing a framework of effective solutions for OSH management. These themes can form the basis of a good approach to an integrated OSH strategy. Copyright © Journal of engineering, Project, and Production management (EPPM-Journal).

关键词： Construction industry

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Numerical analysis of Ga gradient effects in ACIGS absorbers for high-efficiency tandem solar cells

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Optical and Quantum Electronics 2025年第3期57卷 1-19页

作者： Boukortt, Nour El I. Loureiro, Antonio Garcia Almutairi, Ohood A. Centro Singular de Investigación en Tecnoloxías Intelixentes University of Santiago de Compostela Santiago de Compostela Spain Department of Electronics and Information Systems Ghent University Technology Park 126 Zwijnaarde Belgium Department of Electronic and Electrical Engineering University College London LondonWC1E 6BT United Kingdom Energy Systems Program College of Engineering & Energy Abdullah Al Salem University Khaldiya Kuwait

Ag-alloyed Cu(In,Ga)Se₂ (ACIGS) is a promising material for the bottom subcell in tandem solar cell structures, offering a tunable bandgap that spans the optimal range for maximum efficiency;however, the bandgap widening of ACIGS thin films poses a significant challenge in enhancing their photocurrent. This paper investigates the impact of different grading profiles, specifically focusing on the 'hockey stick'/V-like Ga gradient–induced (GGI) profiles, on the performance of thin-film ACIGS cells. To enhance the physical understanding of these grading profiles we have used Silvaco TCAD tools to analyze how these profiles' depths, notch position, and slope affect the power conversion efficiency (PCE). The optimized ACIGS cell achieves a PCE of 25.80%, compared to 23.60% for the reference device. For the tandem configuration, we pair the optimized ACIGS bottom cell (double grading profile) with a perovskite top cell (band gap ~ 1.66 eV), achieving an overall efficiency of 30.26% under AM1.5G illumination. The obtained results highlight the critical role of Ga gradient profiles in enhancing the bottom cell's performance and stability. Additionally, we compare our results with existing studies to evaluate the broader impact of Ga compositional optimization on ACIGS-based solar cells. This work provides valuable insights into advanced grading strategies and helps us understand the physical behaviour of these high-performance tandem solar cells. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2025.

关键词： Silver alloys

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Empowering self-sustained agriculture: an IoT field tracking model driven by fog computing

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Discover Internet of Things 2025年第1期5卷 1-18页

作者： Singh, Gurpreet Singh, Jaspreet Juneja, Sapna Gulzar, Yonis Gupta, Deepali Ghafoor, Kayhan Zrar Kumar, Mukesh Department of Computer Science and Engineering Chandigarh University Punjab Chandigarh140413 India KIET Group of Institutions Delhi-NCR Uttar Pradesh Ghaziabad201206 India Department of Management Information Systems College of Business Administration King Faisal University Al-Ahsa31982 Saudi Arabia Chitkara University Institute of Engineering and Technology Chitkara University Punjab Rajpura140401 India Department of Information and Communication Technology Eng Erbil Polytechnic University 42VQ+756 120 Meter St Erbil Erbil Governorate Iraq Mechanical Engineering College of Engineering Assosa University Assosa5220 Ethiopia

Increasing availability of cost effective IoT (Internet of Things) devices have led to the development of IoT- based farm management systems. Smart Agriculture is a demanding approach that employs the use of technology-enabled information and communication to monitor farms. In India, somewhere around 60% of the organization’s operations mostly dependent on agriculture directly or indirectly. A nation’s advancement is typically influenced by concerns with agriculture. The most effective approach to addressing agriculture’s challenges is always to improve traditional agricultural practices as well as modernize them into smart agriculture. The smart agriculture technique offers beneficial data collection, highly precise control as well as automated monitoring strategies. This research proposed a IoT assisted fog-based model that promises to provide the cost-effective smart agriculture system. Fog platform brings computation and storing nearer at the network’s the border, allowing for the efficient processing of data produced by IoT devices across smart agricultural systems. The bibliometric evaluation of the Web of Science database for the adoption of the IoT-Fog base infrastructure in the creation of smart agriculture systems is also highlighted in this paper. The proposed solution when implemented as well as when contrasted with existing IoT-based agriculture system exhibit better efficiency. The result revealed that proposed system brings down response time, error rate and standard deviation to significant level and improves the accuracy of current system exponentially. © The Author(s) 2025.

关键词： Agricultural robots

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Comparative Study of Fresh Produce Supply Chain Models Under Contract Farming and Cooperative Markets

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Journal of Advanced Computational Intelligence and Intelligent Informatics 2025年第3期29卷 480-488页

作者： Huang, Yameng Hasuike, Takashi Graduate School of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo169-8555 Japan Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo169-8555 Japan Department of Industrial and Management Systems Engineering Faculty of Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo169-8555 Japan

Smallholders play a vital role in global agriculture but face challenges such as resource limitations and market uncertainties. Contract farming (CF) and cooperative markets provide opportunities to smallholders to address these challenges. In this context, this study develops mathematical planning models for fresh produce supply chains (FPSCs) in two scenarios involving CF and cooperative markets with the objective of maximizing profits of smallholders. Results of computational experiments and sensitivity analysis reveal that CF has greater potential than cooperative markets to mitigate price volatility, thereby offering a stable income source to smallholders. This study provides valuable insights into CF and cooperative market practices, contributing to the sustainability of FPSCs and improving smallholders’ livelihoods. © Fuji Technology Press Ltd.

关键词： Heuristic algorithms

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